exert oneself by doing mental or physical work for a purpose or out of necessity

be employed

cause to work

(physics) a manifestation of energy; the transfer of energy from one physical system to another expressed as the product of a force and the distance through which it moves a body in the direction of that force

arrive at a certain condition through repeated motion

give a workout to

go sour or spoil

cause to undergo fermentation

find the solution to (a problem or question) or understand the meaning of

applying the mind to learning and understanding a subject (especially by reading)

a product produced or accomplished through the effort or activity or agency of a person or thing

exert oneself by doing mental or physical work for a purpose or out of necessity

be employed

cause to work

(physics) a manifestation of energy; the transfer of energy from one physical system to another expressed as the product of a force and the distance through which it moves a body in the direction of that force

arrive at a certain condition through repeated motion

give a workout to

go sour or spoil

cause to undergo fermentation

find the solution to (a problem or question) or understand the meaning of

applying the mind to learning and understanding a subject (especially by reading)

a product produced or accomplished through the effort or activity or agency of a person or thing